Filter-manufacturing press.



F. W. MANGELSDORFF.

FILTER MANUFACTURING PRESS.

APPLICATION FILED APR.8, I912.

Patented Mar. 14, 1916.

2 SHEETSSHEET I F. W. MANGELSDORFF.

FILTER MANUFACTURING PRESS.

APPLICATION FILED APR. 8. 1912.

1,, 1775., Patented Mar. 14, 1916.

2 SHEETSSHEET 2.

$14 uevttoz FREDERICK W. MANGELSDORFF. OF MILWAUKEE, WISCONSIN.

FILTEBFMANUFACTURING PRESS.

Specification of Letters Patent.

Patented Mar. 14, 1916.

Application filed April 8, 1912. Serial No. 689,354.

GELSDORFF, a citizen of the United States, re-

siding at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Filter-Manufacturing Presses, of which the following i is a specification.

My invention relates to improvements in filter manufacturing presses of that type in which moist wood pulp or linen fibers are compressed into interlocking relation to a suitable frame.

My invention is particularly adapted for use in the manufacture of filtering elements for use in liquid filters of the type shown and described in my former patent, dated December 5, 1911, and numbered 1011130.

The object of my invention is to provide a simple and inexpensive machine for compressing filtering material in substantially equal portions above and below a'suitable filtering frame and upon its interior inlet and outlet ducts, the filtering material being apertured in correspondence with the frame ducts, my improved machine being adapted to compress the same into a homogeneous sheet or disk, in the marginal portions of which the frame is embedded substantially midway between the side surfaces.

In the drawings-Figure 1 is a vertical sectional view of my improved machine drawn to a plane which includes the two side frame posts. Fig. 2 is a plan view, showing a portion of the platen and platen containing casing section in its outwardly swung position and with a filter frame unit mounted thereon. Fig. 3 is a detail sectional view of a portion'of a filter unit after the completion of the compressing operation.

Like parts are identified by the same reference characters throughout the several views.

Supporting frame posts 1, 2 and 3 are connected by a T-shaped cross head 4 at their upper ends, from which the upper or stationary plate 5 is suspended by a hanger 6. The lower press plate or platen 7 is actuated by hydraulic power, the power fluid being admitted to a cylinder 10 underneath a piston 11, which carries a post 12 and a platen actuating plate 13.

The platen 7 is mounted in a casing section 15, having an inturned platen supporting flange 16 upon which the platen 7 rests. The casing section 15 is supported from the post 1 by a sleeve 20, having a projecting arm 21 rigidly secured to or integrally formed with the casing section 15, said proect ng arm having lugs to interlock with pro ecting lugs of casing section 47, locking same and frame 30 to casing section 15. The sleeve 20 bears upon a post collar 24, which is loosely connected with the post 1 and bears upon a stationary collar 25. The collar 24 is provided with a cup-shaped upper end 26 in which sleeve 20 seats. The casing section 15 on the side opposite the collar 20 is provided with a projecting arm 27, which is adapted to engage and partially encircle the guide collar 71 of post 2 and may be detachably secured thereto by a latch 28. The upper margin of the casing section 15 is adapted to receive a filter unit frame 30 in a position with the frame ports 31 in registry with core posts 32, which proect through openings in the flange 16 of said casing section 15 and through corresponding openings in the platen 7. These core posts 32 are provided with cylindrical sockets 34, in which springs 35 are seated, and the posts are resiliently supported by these springs from upwardly projecting stems 37, flanged at 38 to form a seat for the springs. The stems 37 extend through an internal nut 39 into the post sockets, the flanges 38 being located above the nuts 39. The exterior nut 40 has threaded engagement with the posts 32 and is adjustable thereon and adapted to limit the movement of the post through the casing flange 16. The stems 37 are rigidly connected with a shoe 42. Said shoe 42 is adapted to swing into and out of engagement with the platen actuating member 13 and is provided with a channel 43 adapted to receive the outer margins of the member 13, as shown in Fig. 1. Guide rods 45 extend downwardly from the platen 7 and loosely through the shoe 42 with heads 46 on their lower ends, whereby the shoe is suspended from the platen and held against rotation, the guide rods 45 cooperating with the stems 37 for this purpose.

When the casing 15 is swung outwardly from beneath the spider frame 4 and stationary press plate 5, the filter frame 30 may be readily adjusted thereon and a cylindrical casing 47 may then be mounted upon the filter frame 30, the casing section 47 having the same diameter as the casing section 15 and with the latter forming a receptacle for the filter mass. The filter mass is then poured into this receptacle, passing through the central opening in the filter frame 30, the platen 7 serving as a bottom 'for such receptacle. When the space withinv the casing sections 15 and 47 have been suitably filled with filter mass, the sections may then be swung into a position directly underneath press plate 5, the platen actuating member 13 being received in the channel 43 in the shoe 42. The parts will then be in the position shown in Fig. 1. Power water may then be admitted to the cylinder 10 underneath piston 11 from an inlet duct 50, through a port 51 in valve 55 and through a duct 56 leading from the valve casing to thelower end of cylinder 10. The space above the platen 11 will. then be opened to an exhaust port 58 in valve 55 through duct 59. Powerwater being admitted underneath the piston. 11, the upward movement of said piston will first be communicated through the platen actuating member 13 to the shoe -42. The upward movement of the shoe l2 and the stems 37 connected therewith will lift the core'posts 32 through'the ports 31 in the filter frame 30, clearing these ports of filter mass. This upward movement continues with the posts 32 moving independently of the platen 7 until the posts have been lifted through the filter mass, when actuating member 13 engages the under surface of plate 7. .The shoe 42 simultaneously engages the under surface of the platen. Thereupon the platen will move upwardly in casing 15. The posts 32 will continue to move upwardly until they strike against cushion blocks 60 in the upper press plate 5, after which a continued upward movement of the platen 7 may be permitted compressing the filter mass. But the core posts 32 will remain stationary, the stems 37 being permitted to move upward by compressing the springs 35. This-ilpward movement of the platen 7 within the casing 15 may be continued until stops 65 on stop rods 66 carried by the platen 7 are brought into contact with the casing flange 16. Thereafter a further upward movement will be transmitted through said stop rods 66 to lift the casing sections 15 and 47. This upward movement of the casing sections will, however, be resisted by springs 70 on the posts 1 and 2. The spring 70 on the post 1 bears directly on the sleeve 20. The spring on the post 2 bears upon a collar 71, which is interposed between it and the hook arm 27. said collar being loose on the post. These springs 70 allow the casing sections to lift during the compression of the filter mass.

During the upward movement of the platen 7, part of the filter mass underneath frame 30 will flow through said. frame into the space above it. This causes a circulation: in the filter mass and maintains a homogeneous mixture instead of permitting the heavier particles or fibers to settle into the lower portion. Both the upper-"and the lower press plates 5 and 7 are provided with apertures 7 5, through which the liquid may escape from the filter mass or pulp. The compression surfaces of the press plates 5 and 7 are provided with concentric corrugations76, whereby the filter mass is correspondingly corrugated to increase the area of filtering surface. These pressure surfaces are covered with a correspondingly corrugated screen77 to prevent fibers from passing through the compressing operation. The stops 65 on the stop rods 66 preferably comprise nuts, which may be adjusted on the threaded lower ends ofthe rods 66. 'I am thus enabled to limit the compression of the filter mass by limiting the independent upward movement of the platen 7, and by adjusting stops 65, I am enabled to compress the filter mass to any desired density. The upward movement of piston 11 is regulated by valve 55 and filter units of varying thickness .and density can therefore be produced. When the compression is completed, valve 55 may be rotated a one quarter turn, whereupon port 51 will connect inlet duct 50 with duct 59, exhaust port 58 being in the meantime connected with duct 56. The power water will thereupon enter the upper part of cylinder 10 and force the piston 11 downwardly to its normal position, as shown in Fig. 1, after which the latch 28 may be disengaged from post 2 and the casing section 15 swung outwardly from under the press plate 5. Casing section 47 and the completed filter unit may then be removed and another filter frame 30 placed in position, after which the casing section 47 may be replaced and the chamber thus formed again filled with filter mass. \Vhen the casing section 15 is swung outwardly, as above explained, a bracket 80 on the sleeve 20 engages a segmental bearing member 81 supported by arms 82 from the collar 24. This prevents sleeve 20 from cramping upon the supporting post 1.

In Fig. 3, I have illustrated a completed filter unit, in which the filter frame 30 is shown with the filter mass 85 compressed thereon. It will be observed that the filter mass is of the same thickness above and below the frame 30. It is also homogeneous throughout, thus affording a uniform resistance to the passage of the filter fluid.

In order that the water may discharge freely through the platen apertures 75, I provide actuating member 13 with spacing projections 90. By mounting the platen loosely upon the casing flange and by allowthe openings 75 during a ing the platen actuating member 13 to move downwardly a substantial distance below the platen, I am able to provide for a movement of the member 13, shoes 42, and core posts 32, preparatory to the movement of the platen, the core posts being lifted through the apertures 31 in the filter unit frames and moved upwardly through the filter mass before the platen begins to move.

The core posts will therefore pass through the filter mass'before it is subjected to pressure and will ass through it easily, clearing ports 31 of filter mass. The upper ends of the posts are slightly tapered so that on passing above the filter mass, the latter flows from the tops of the posts, leaving them clear preparatory to the upward movement of the platen and preparatory to the contact of the posts with the cushions 60. During the independent upward movement of the posts 32, the springs prevent guide members 20 and 71 from lifting, even though the posts may bind a little in the platen or in the filter unit frame due to particles of filter mass becoming clogged in the openings. The filter unit frame 30 and the easing section 47 are prevented from lifting independently of the lower section 15 by bracket arms 96, which loosely engage segmental lugs 97 on the outer surface of casing section 47. When casing section 47 is adjusted in position, it is partially rotated to bring the segment flanges 97 underneath the brackets 96, thus locking the section 47 to section 15. It'will be understood that the resistance of the springs 70 will be greater than any resistance which the posts 32 will encounter during their initial or independent upward movement. The casing sections will also remain stationary during the upward initial movement of the platen and until stops 65 contact with the inturned flanges 16 of casing section 15. The casing sections willthen be lifted, compressing springs/70,

and the compression of the filter mass will commence after the upper margin of casing section 47 has passed the outer margin of platen 5.

I claim-- 1. A filter press plate having a horizontal pressure face, provided with uniformly spaced corrugations forming a succession of ridges and channels adapted to materially increase the surface area of the filter mass porting laterally movable casing, and stops to limit the independent movement of the platen in the casing.

4. A movable filter press plate or platen provided with a set of depending stop rods, adjustable stops thereon, and a casing having a member in the path of said stops.

5. The combination with a filter press casing, a movable platen therein, a flange on the casing in supporting relation to the platen, said platen being apertured in correspondence with the liquid conveying ports of the filter, a setfof core posts extending through said apertures and adapted to pass through the frame parts of a filter unit, a resilient support for said posts, and a hydraulic press, arranged to initially actuate the core posts, and to subsequently actuate the plate I e 6. The combination with an apertured press platen of a filter press, of a casing section for filter mass adapted to support a unit frame, a set of coreposts extending through apertures in the platen, means for actuating the core posts independently of the platen, and means for actuating the platen.

7 The combination with an apertured press platen of a filter press, of a casing section for filter mass adapted to support a unit frame, a set of core-posts extending through apertures in thevplaten, means for actuating the core posts independently of the platen, and means for actuating the platen, said core posts being resiliently mounted.

8. The combination with an apertured press platen of a filter press, of a casing section for filter mass adapted to support a unit frame, a set of coreposts extending through apertures in the platen, means for actuating the core posts independently of the platen, and means for actuating the platen, said platen being provided with stop rods for limiting its upward movement in the casing.

9. The combination with an apertured press platen of a filter press, of a casing section for filter mass adapted to support a unit frame, a set of core posts extending through apertures in the platen, means for actuating the core posts independently of the platen, and means for actuating the platen, said platen being provided with stop rods for limiting its upward movement in the casing, and means for adjusting the length of the stop rods.

10. The combination with an apertured press platen of a filter press, of a casing section for filter mass adapted to support a unit frame, a set of core posts extending through apertures in the platen, means for actuating the core posts independently of the platen, and means for actuating the platen, said platen being provided with stop rods for limiting itsupward movement in the casing and said casing being also movable vertically, together with springs resiliently opposing the upward movement of the casin 11. The combination of a casing section of a. filter press adapted to support a filter-- and connections .t'or operating the post actuating rods from the platen actuating member.

12. The combination with a fixed press plate, of a swinging casing movable laterally into and out of operative relation to said press plate. a platen movably supported by the casing, and a platen actuating member adapted to engage and actuate the platen when the casing is in operative relation to the press plate.

13. The combination with a fixed press plate, of a swinging casing section, a platen loosely supported therein, and a platen actuating member adapted to engage and actuate the platen when the casing and press plate are in registry, said casing being adapted to swing laterally away from the platen actuating member.

14. The combination with a fixed press plate, of a swinging casing section, a platen loosely supported therein, and a platen actuating member adapted to engage and actuate the platen when the casing and press plate are in registry, together with a set of resiliently mounted core posts carried by the casing section, and actuating shoes for said core posts adapted to loosely engage the platen actuating member when the platen is in operative relation thereto.

15. The combination with a fixedpress plate, of a. swinging casing section, a platen loosely supported therein, and'a platen actuating member adapted to engage and actuate the platen when the casing and press plate are in registry, together with spacing devices interposed between the actuating member and platen, said platen being perforated for water discharge.

16. The combination with a fixed press plate, of a swinging casing section, a platen loosely supported therein, and a platen actuating member adapted to engage and actuate the platen when the casing and press plate are in registry, together with a set of resiliently mounted core posts carried by the casing section, and actuating shoes for said core posts adapted to loosely engage the platen actuating member when the platen is in operative relation thereto, said fixed press plate being provided with cushions against which said core posts may impinge.

17. The combination with a fixed press plate of a swinging casing section, a platen loosely supported therein, and a platen actuating member adapted to engage and actuate the platen when the casing and press plate are in registry, together with a set of resilient core posts, a removable section between which and the swinging casing section a filter unit frame may be engaged, said casing sections being adapted to support a filter unit frame having duct apertures therein receiving the core posts when the latter are in normal position, and means for actuating the core posts to move them upwardly through such apertures, preparatory to actuating the platen.

In testimony whereof I aflix my signature in the presence of two witnesses.

FREDERICK W. MANGELSDORFF.

Witnesses:

LEVERETT C. WHEELER, IRMA D. BREMER. 

